/*
** Born to code, die for bugs! 
*/

#include "./rbuffer.h"
#include <assert.h>

void* seek_rbuffer(struct rbuffer_t* rbuffer, size_t offset) {
    void* data;

    assert(rbuffer);
    assert(rbuffer->data);
    assert(rbuffer->size >= offset);

	if (rbuffer->size < offset) {
		return NULL;
	}

    data = rbuffer->data;

    rbuffer->data = (unsigned char*)rbuffer->data + offset;
    rbuffer->size -= offset;

    return data;
}

/*
** MIT License
**
** Copyright (c) 2012 Zhao Boqiang
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
** 
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
** THE SOFTWARE.
*/

